royteeuwen opened a new pull request, #206:
URL: https://github.com/apache/sling-org-apache-sling-resourceresolver/pull/206

   When OSGi fires the @Modified lifecycle callback (e.g. triggered by a bundle 
deployment causing a configuration change), modified() delegates to 
deactivateInternal() which calls resourceDecoratorTracker.close(), clearing all 
registered ResourceDecorator services.
   
   Because the decorators use ReferencePolicy.DYNAMIC, OSGi does not re-fire 
bindResourceDecorator after a @Modified event (no component restart). The 
tracker is therefore left permanently empty, silently breaking any feature that 
relies on ResourceDecorator (e.g. path-rewriting decorators).
   
   Fix: move resourceDecoratorTracker.close() out of deactivateInternal() and 
into deactivate() only. deactivateInternal() is still called from both 
@Modified and @Deactivate, but only the true component teardown path 
(@Deactivate) now closes the tracker.
   
   Also add a null-guard in ResourceDecoratorEntry.compareTo() to prevent NPE 
when ServiceReference is null.


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